CVE-2022-25313
MediumPublished
In Expat (aka libexpat) before 2.4.5, an attacker can trigger stack exhaustion in build_model via a large nesting depth in the DTD element.
- Published
- Feb 18, 2022
- Updated
- Oct 14, 2026
- Assigning CNA
- mitre
- Evidence observed
- Aug 8, 2026
Primary CVSS
6.5/ 10Medium
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H3.3%
Low · next 30 days
- Percentile
- 88.3%
- Model date
- Oct 15, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
In Expat (aka libexpat) before 2.4.5, an attacker can trigger stack exhaustion in build_model via a large nesting depth in the DTD element.
Sources
Repository dedicated to CVE-2022-25313, a vulnerability in Expat 2.1.0, providing analysis and potential exploitation code.
Responsible use
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